Now this is interesting!
I believe that there were NO Australian delivered 105bhp Suds to Australia!
This is because:
1. Club 900 Series guru Colin Thomas says so (!)

2. Bit of Club History: In the mid 1980's, a certain Wayne Melville had his 95bhp Sud Ti converted to a factory spec 105bhp by Beninca Motors. He was competing in Standard Under 1600 Class at the time and was winning his class comfortably. There were some objections saying that he should be in Modified Class. Wayne's response was that just because the 105bhp Suds were never sold in Australia, doesn't mean they don't exist. And since his engine change was a full and complete overhaul, he should remain in Standard Class. He won his case!
Interesting to note that our current and proposed Competition Rules are silent on that point: "...as sold by Alfa Romeo..."; no mention of Alfa Romeo Australia!
Now, back to Simon's car: I wonder if it's Wayne's car? Or possibly a later 105bhp engine from an Alfa33 Green Clover Leaf? Either way, it's a great rocket! Enjoy it!